Updated README.md

Added information about SORMASDev Twitter account

Author: MateStrysewske

README.md

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-  <a href="https://github.com/hzi-braunschweig/SORMAS-Project/blob/development/LICENSE"><img alt="License" src="https://img.shields.io/badge/license-GPL%20v3-blue"/></a> <a href="https://github.com/hzi-braunschweig/SORMAS-Project/releases/latest"><img alt="Latest Release" src="https://img.shields.io/github/v/release/hzi-braunschweig/SORMAS-Project"/></a> <img alt="Development Build Status" src="https://github.com/hzi-braunschweig/SORMAS-Project/workflows/Java%20CI%20with%20Maven/badge.svg?branch=development"/> <a href="https://gitter.im/SORMAS-Project"><img alt="Gitter" src="https://badges.gitter.im/SORMAS-Project/dev-support.svg"/></a>
+  <a href="https://github.com/hzi-braunschweig/SORMAS-Project/blob/development/LICENSE"><img alt="License" src="https://img.shields.io/badge/license-GPL%20v3-blue"/></a> <a href="https://github.com/hzi-braunschweig/SORMAS-Project/releases/latest"><img alt="Latest Release" src="https://img.shields.io/github/v/release/hzi-braunschweig/SORMAS-Project"/></a> <img alt="Development Build Status" src="https://github.com/hzi-braunschweig/SORMAS-Project/workflows/Java%20CI%20with%20Maven/badge.svg?branch=development"/> <a href="https://gitter.im/SORMAS-Project"><img alt="Gitter" src="https://badges.gitter.im/SORMAS-Project/dev-support.svg"/></a> <a href="https://twitter.com/SORMASDev"><img alt="Twitter" src="https://img.shields.io/twitter/follow/SORMASDev?label=%40SORMASDev&style=social"/></a>
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 You can give SORMAS a try on our play server at https://sormas.helmholtz-hzi.de!
 
 #### How Can I Get Involved?
-Read through our [*Contributing Readme*](CONTRIBUTING.md) and contact us at [email protected] or join our [developer chat on Gitter](https://gitter.im/SORMAS-Project) to learn how you can help to drive the development of SORMAS forward and to get development support from our core developers. SORMAS is a community-driven project, and we'd love to have you on board! If you want to contribute to the code, please strictly adhere to the [*Development Environment*](DEVELOPMENT_ENVIRONMENT.md) guide to ensure that everything is set up correctly. Please also make sure that you've read the [*Development Contributing Guidelines*](CONTRIBUTING.md#development-contributing-guidelines) before you start to develop.
+Read through our [*Contributing Readme*](CONTRIBUTING.md) and contact us at [email protected] or join our [developer chat on Gitter](https://gitter.im/SORMAS-Project) to learn how you can help to drive the development of SORMAS forward and to get development support from our core developers. SORMAS is a community-driven project, and we'd love to have you on board! If you want to contribute to the code, please strictly adhere to the [*Development Environment*](DEVELOPMENT_ENVIRONMENT.md) guide to ensure that everything is set up correctly. Please also make sure that you've read the [*Development Contributing Guidelines*](CONTRIBUTING.md#development-contributing-guidelines) before you start to develop, and either follow or regularly check our Twitter account <a href="https://twitter.com/SORMASDev" target="_blank">@SORMASDev</a> to stay up to date with our schedule, new releases, guideline changes and other announcements.
 
 #### How Can I Report a Bug or Request a Feature?
 If you want to report a **security issue**, please follow our guideline for [*Responsible Disclosure*](SECURITY.md).